Debian 12
Install required packages
Add packages:
sudo apt-get install git autoconf automake libtool make \
libprotobuf-c-dev protobuf-c-compiler build-essential \
python3-dev python3-pytest python3-sphinx libjson-c-dev \
libelf-dev libreadline-dev cmake libcap-dev bison flex \
pkg-config texinfo gdb libgrpc-dev python3-grpc-tools
Note
The libunwind library is optional but highly recommended, as it improves
backtraces printed for crashes and debugging. However, if it is not
available for some reason, it can simply be left out without any loss of
functionality.
FRR depends on the relatively new libyang library to provide YANG/NETCONF
support. Unfortunately, most distributions do not yet offer a libyang
package from their repositories. Therefore we offer two options to install this
library.
Option 1: Binary Install
The FRR project builds some binary libyang packages.
RPM packages are at our RPM repository.
DEB packages are available as CI artifacts here.
Warning
libyang version 2.1.128 or newer is required to build FRR.
Note
The libyang development packages need to be installed in addition to the
libyang core package in order to build FRR successfully. Make sure to
download and install those from the link above alongside the binary
packages.
Depending on your platform, you may also need to install the PCRE
development package. Typically this is libpcre2-dev or pcre2-devel.
Option 2: Source Install
Note
Ensure that the libyang build requirements
are met before continuing. Usually this entails installing cmake and
libpcre2-dev or pcre2-devel.
git clone https://github.com/CESNET/libyang.git
cd libyang
git checkout v2.1.128
mkdir build; cd build
cmake --install-prefix /usr \
-D CMAKE_BUILD_TYPE:String="Release" ..
make
sudo make install
Get FRR, compile it and install it (from Git)
This assumes you want to build and install FRR from source and not using any packages
Add frr groups and user
sudo addgroup --system --gid 92 frr
sudo addgroup --system --gid 85 frrvty
sudo adduser --system --ingroup frr --home /var/opt/frr/ \
--gecos "FRR suite" --shell /bin/false frr
sudo usermod -a -G frrvty frr
Download Source, configure and compile it
(You may prefer different options on configure statement. These are just an example.)
git clone https://github.com/frrouting/frr.git frr
cd frr
./bootstrap.sh
./configure \
--sysconfdir=/etc \
--localstatedir=/var \
--sbindir=/usr/lib/frr \
--enable-multipath=64 \
--enable-user=frr \
--enable-group=frr \
--enable-vty-group=frrvty \
--enable-configfile-mask=0640 \
--enable-logfile-mask=0640 \
--enable-fpm \
--with-pkg-git-version \
--with-pkg-extra-version=-MyOwnFRRVersion
make
make check
sudo make install
For more compile options, see ./configure --help
Create empty FRR configuration files
sudo install -m 640 -o frr -g frr /dev/null /etc/frr/frr.conf
sudo install -m 640 -o frr -g frr tools/etc/frr/daemons /etc/frr/daemons
Edit /etc/frr/daemons and enable the FRR daemons for the protocols you need
Enable IP & IPv6 forwarding
Edit /etc/sysctl.conf and uncomment the following values (ignore the
other settings)
# Uncomment the next line to enable packet forwarding for IPv4
net.ipv4.ip_forward=1
# Uncomment the next line to enable packet forwarding for IPv6
# Enabling this option disables Stateless Address Autoconfiguration
# based on Router Advertisements for this host
net.ipv6.conf.all.forwarding=1
Reboot or use sysctl -p to apply the same config to the running
system